55346405 has 4 divisors (see below), whose sum is σ = 66415692. Its totient is φ = 44277120.

The previous prime is 55346399. The next prime is 55346453. The reversal of 55346405 is 50464355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50464355 = 5 ⋅10092871.

It can be written as a sum of positive squares in 2 ways, for example, as 27867841 + 27478564 = 5279^2 + 5242^2 .

It is not a de Polignac number, because 55346405 - 2⁸ = 55346149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5534636 + ... + 5534645.

It is an arithmetic number, because the mean of its divisors is an integer number (16603923).

Almost surely, 2^55346405 is an apocalyptic number.

It is an amenable number.

55346405 is a deficient number, since it is larger than the sum of its proper divisors (11069287).

55346405 is a wasteful number, since it uses less digits than its factorization.

55346405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11069286.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 55346405 is about 7439.5164493400. The cubic root of 55346405 is about 381.0919767930.

The spelling of 55346405 in words is "fifty-five million, three hundred forty-six thousand, four hundred five".